#include <linux/if_vlan.h>
#include <linux/pci.h>
-#include "fm10k_common.h"
+#include "fm10k_pf.h"
+
+#define FM10K_MAX_JUMBO_FRAME_SIZE 15358 /* Maximum supported size 15K */
+
+enum fm10k_ring_f_enum {
+ RING_F_RSS,
+ RING_F_QOS,
+ RING_F_ARRAY_SIZE /* must be last in enum set */
+};
+
+struct fm10k_ring_feature {
+ u16 limit; /* upper limit on feature indices */
+ u16 indices; /* current value of indices */
+ u16 mask; /* Mask used for feature to ring mapping */
+ u16 offset; /* offset to start of feature */
+};
+
+#define fm10k_vxlan_port_for_each(vp, intfc) \
+ list_for_each_entry(vp, &(intfc)->vxlan_port, list)
+struct fm10k_vxlan_port {
+ struct list_head list;
+ sa_family_t sa_family;
+ __be16 port;
+};
struct fm10k_intfc {
+ unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+ struct net_device *netdev;
struct pci_dev *pdev;
+ unsigned long state;
+
+ u32 flags;
+#define FM10K_FLAG_RESET_REQUESTED (u32)(1 << 0)
+#define FM10K_FLAG_RSS_FIELD_IPV4_UDP (u32)(1 << 1)
+#define FM10K_FLAG_RSS_FIELD_IPV6_UDP (u32)(1 << 2)
+#define FM10K_FLAG_RX_TS_ENABLED (u32)(1 << 3)
+#define FM10K_FLAG_SWPRI_CONFIG (u32)(1 << 4)
+ int xcast_mode;
+
+ u64 rx_overrun_pf;
+ u64 rx_overrun_vf;
+ struct fm10k_ring_feature ring_feature[RING_F_ARRAY_SIZE];
+
+ struct fm10k_hw_stats stats;
struct fm10k_hw hw;
u32 __iomem *uc_addr;
+ u16 msg_enable;
+
+ u32 reta[FM10K_RETA_SIZE];
+ u32 rssrk[FM10K_RSSRK_SIZE];
+
+ /* VXLAN port tracking information */
+ struct list_head vxlan_port;
+
+#if defined(HAVE_DCBNL_IEEE) && defined(CONFIG_DCB)
+ u8 pfc_en;
+#endif
+ u8 rx_pause;
+
+ /* GLORT resources in use by PF */
+ u16 glort;
+ u16 glort_count;
+
+ /* VLAN ID for updating multicast/unicast lists */
+ u16 vid;
+};
+
+enum fm10k_state_t {
+ __FM10K_RESETTING,
+ __FM10K_DOWN,
+ __FM10K_MBX_LOCK,
+ __FM10K_LINK_DOWN,
};
+static inline void fm10k_mbx_lock(struct fm10k_intfc *interface)
+{
+ /* busy loop if we cannot obtain the lock as some calls
+ * such as ndo_set_rx_mode may be made in atomic context
+ */
+ while (test_and_set_bit(__FM10K_MBX_LOCK, &interface->state))
+ udelay(20);
+}
+
+static inline void fm10k_mbx_unlock(struct fm10k_intfc *interface)
+{
+ /* flush memory to make sure state is correct */
+ smp_mb__before_atomic();
+ clear_bit(__FM10K_MBX_LOCK, &interface->state);
+}
+
+static inline int fm10k_mbx_trylock(struct fm10k_intfc *interface)
+{
+ return !test_and_set_bit(__FM10K_MBX_LOCK, &interface->state);
+}
+
/* main */
extern char fm10k_driver_name[];
extern const char fm10k_driver_version[];
/* PCI */
int fm10k_register_pci_driver(void);
void fm10k_unregister_pci_driver(void);
+
+/* Netdev */
+struct net_device *fm10k_alloc_netdev(void);
#endif /* _FM10K_H_ */
--- /dev/null
+/* Intel Ethernet Switch Host Interface Driver
+ * Copyright(c) 2013 - 2014 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Contact Information:
+ * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ */
+
+#include "fm10k.h"
+
+static netdev_tx_t fm10k_xmit_frame(struct sk_buff *skb, struct net_device *dev)
+{
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+}
+
+static int fm10k_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if (new_mtu < 68 || new_mtu > FM10K_MAX_JUMBO_FRAME_SIZE)
+ return -EINVAL;
+
+ dev->mtu = new_mtu;
+
+ return 0;
+}
+
+static int fm10k_set_mac(struct net_device *dev, void *p)
+{
+ struct sockaddr *addr = p;
+ s32 err = 0;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ if (!err) {
+ ether_addr_copy(dev->dev_addr, addr->sa_data);
+ dev->addr_assign_type &= ~NET_ADDR_RANDOM;
+ }
+
+ return err;
+}
+
+static void fm10k_set_rx_mode(struct net_device *dev)
+{
+}
+
+static const struct net_device_ops fm10k_netdev_ops = {
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_start_xmit = fm10k_xmit_frame,
+ .ndo_set_mac_address = fm10k_set_mac,
+ .ndo_change_mtu = fm10k_change_mtu,
+ .ndo_set_rx_mode = fm10k_set_rx_mode,
+};
+
+#define DEFAULT_DEBUG_LEVEL_SHIFT 3
+
+struct net_device *fm10k_alloc_netdev(void)
+{
+ struct fm10k_intfc *interface;
+ struct net_device *dev;
+
+ dev = alloc_etherdev(sizeof(struct fm10k_intfc));
+ if (!dev)
+ return NULL;
+
+ /* set net device and ethtool ops */
+ dev->netdev_ops = &fm10k_netdev_ops;
+
+ /* configure default debug level */
+ interface = netdev_priv(dev);
+ interface->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
+
+ /* configure default features */
+ dev->features |= NETIF_F_SG;
+
+ /* all features defined to this point should be changeable */
+ dev->hw_features |= dev->features;
+
+ /* configure VLAN features */
+ dev->vlan_features |= dev->features;
+
+ /* configure tunnel offloads */
+ dev->hw_enc_features = NETIF_F_SG;
+
+ return dev;
+}
#include "fm10k.h"
+static const struct fm10k_info *fm10k_info_tbl[] = {
+ [fm10k_device_pf] = &fm10k_pf_info,
+};
+
/**
* fm10k_pci_tbl - PCI Device ID Table
*
* Class, Class Mask, private data (not used) }
*/
static const struct pci_device_id fm10k_pci_tbl[] = {
- { PCI_VDEVICE(INTEL, FM10K_DEV_ID_PF) },
+ { PCI_VDEVICE(INTEL, FM10K_DEV_ID_PF), fm10k_device_pf },
/* required last entry */
{ 0, }
};
return ~value;
value = readl(&hw_addr[reg]);
- if (!(~value) && (!reg || !(~readl(hw_addr))))
+ if (!(~value) && (!reg || !(~readl(hw_addr)))) {
+ struct fm10k_intfc *interface = hw->back;
+ struct net_device *netdev = interface->netdev;
+
hw->hw_addr = NULL;
+ netif_device_detach(netdev);
+ netdev_err(netdev, "PCIe link lost, device now detached\n");
+ }
return value;
}
+static int fm10k_hw_ready(struct fm10k_intfc *interface)
+{
+ struct fm10k_hw *hw = &interface->hw;
+
+ fm10k_write_flush(hw);
+
+ return FM10K_REMOVED(hw->hw_addr) ? -ENODEV : 0;
+}
+
+/**
+ * fm10k_sw_init - Initialize general software structures
+ * @interface: host interface private structure to initialize
+ *
+ * fm10k_sw_init initializes the interface private data structure.
+ * Fields are initialized based on PCI device information and
+ * OS network device settings (MTU size).
+ **/
+static int fm10k_sw_init(struct fm10k_intfc *interface,
+ const struct pci_device_id *ent)
+{
+ static const u32 seed[FM10K_RSSRK_SIZE] = { 0xda565a6d, 0xc20e5b25,
+ 0x3d256741, 0xb08fa343,
+ 0xcb2bcad0, 0xb4307bae,
+ 0xa32dcb77, 0x0cf23080,
+ 0x3bb7426a, 0xfa01acbe };
+ const struct fm10k_info *fi = fm10k_info_tbl[ent->driver_data];
+ struct fm10k_hw *hw = &interface->hw;
+ struct pci_dev *pdev = interface->pdev;
+ struct net_device *netdev = interface->netdev;
+ unsigned int rss;
+ int err;
+
+ /* initialize back pointer */
+ hw->back = interface;
+ hw->hw_addr = interface->uc_addr;
+
+ /* PCI config space info */
+ hw->vendor_id = pdev->vendor;
+ hw->device_id = pdev->device;
+ hw->revision_id = pdev->revision;
+ hw->subsystem_vendor_id = pdev->subsystem_vendor;
+ hw->subsystem_device_id = pdev->subsystem_device;
+
+ /* Setup hw api */
+ memcpy(&hw->mac.ops, fi->mac_ops, sizeof(hw->mac.ops));
+ hw->mac.type = fi->mac;
+
+ /* Set common capability flags and settings */
+ rss = min_t(int, FM10K_MAX_RSS_INDICES, num_online_cpus());
+ interface->ring_feature[RING_F_RSS].limit = rss;
+ fi->get_invariants(hw);
+
+ /* pick up the PCIe bus settings for reporting later */
+ if (hw->mac.ops.get_bus_info)
+ hw->mac.ops.get_bus_info(hw);
+
+ /* limit the usable DMA range */
+ if (hw->mac.ops.set_dma_mask)
+ hw->mac.ops.set_dma_mask(hw, dma_get_mask(&pdev->dev));
+
+ /* update netdev with DMA restrictions */
+ if (dma_get_mask(&pdev->dev) > DMA_BIT_MASK(32)) {
+ netdev->features |= NETIF_F_HIGHDMA;
+ netdev->vlan_features |= NETIF_F_HIGHDMA;
+ }
+
+ /* reset and initialize the hardware so it is in a known state */
+ err = hw->mac.ops.reset_hw(hw) ? : hw->mac.ops.init_hw(hw);
+ if (err) {
+ dev_err(&pdev->dev, "init_hw failed: %d\n", err);
+ return err;
+ }
+
+ /* initialize hardware statistics */
+ hw->mac.ops.update_hw_stats(hw, &interface->stats);
+
+ /* Start with random Ethernet address */
+ eth_random_addr(hw->mac.addr);
+
+ /* Initialize MAC address from hardware */
+ err = hw->mac.ops.read_mac_addr(hw);
+ if (err) {
+ dev_warn(&pdev->dev,
+ "Failed to obtain MAC address defaulting to random\n");
+ /* tag address assignment as random */
+ netdev->addr_assign_type |= NET_ADDR_RANDOM;
+ }
+
+ memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
+ memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len);
+
+ if (!is_valid_ether_addr(netdev->perm_addr)) {
+ dev_err(&pdev->dev, "Invalid MAC Address\n");
+ return -EIO;
+ }
+
+ /* Only the PF can support VXLAN and NVGRE offloads */
+ if (hw->mac.type != fm10k_mac_pf) {
+ netdev->hw_enc_features = 0;
+ netdev->features &= ~NETIF_F_GSO_UDP_TUNNEL;
+ netdev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL;
+ }
+
+ /* initialize vxlan_port list */
+ INIT_LIST_HEAD(&interface->vxlan_port);
+
+ /* initialize RSS key */
+ memcpy(interface->rssrk, seed, sizeof(seed));
+
+ /* Start off interface as being down */
+ set_bit(__FM10K_DOWN, &interface->state);
+
+ return 0;
+}
+
+static void fm10k_slot_warn(struct fm10k_intfc *interface)
+{
+ struct device *dev = &interface->pdev->dev;
+ struct fm10k_hw *hw = &interface->hw;
+
+ if (hw->mac.ops.is_slot_appropriate(hw))
+ return;
+
+ dev_warn(dev,
+ "For optimal performance, a %s %s slot is recommended.\n",
+ (hw->bus_caps.width == fm10k_bus_width_pcie_x1 ? "x1" :
+ hw->bus_caps.width == fm10k_bus_width_pcie_x4 ? "x4" :
+ "x8"),
+ (hw->bus_caps.speed == fm10k_bus_speed_2500 ? "2.5GT/s" :
+ hw->bus_caps.speed == fm10k_bus_speed_5000 ? "5.0GT/s" :
+ "8.0GT/s"));
+ dev_warn(dev,
+ "A slot with more lanes and/or higher speed is suggested.\n");
+}
+
/**
* fm10k_probe - Device Initialization Routine
* @pdev: PCI device information struct
static int fm10k_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
+ struct net_device *netdev;
+ struct fm10k_intfc *interface;
+ struct fm10k_hw *hw;
int err;
u64 dma_mask;
pci_set_master(pdev);
pci_save_state(pdev);
+ netdev = fm10k_alloc_netdev();
+ if (!netdev) {
+ err = -ENOMEM;
+ goto err_alloc_netdev;
+ }
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+
+ interface = netdev_priv(netdev);
+ pci_set_drvdata(pdev, interface);
+
+ interface->netdev = netdev;
+ interface->pdev = pdev;
+ hw = &interface->hw;
+
+ interface->uc_addr = ioremap(pci_resource_start(pdev, 0),
+ FM10K_UC_ADDR_SIZE);
+ if (!interface->uc_addr) {
+ err = -EIO;
+ goto err_ioremap;
+ }
+
+ err = fm10k_sw_init(interface, ent);
+ if (err)
+ goto err_sw_init;
+
+ /* final check of hardware state before registering the interface */
+ err = fm10k_hw_ready(interface);
+ if (err)
+ goto err_register;
+
+ err = register_netdev(netdev);
+ if (err)
+ goto err_register;
+
+ /* carrier off reporting is important to ethtool even BEFORE open */
+ netif_carrier_off(netdev);
+
+ /* stop all the transmit queues from transmitting until link is up */
+ netif_tx_stop_all_queues(netdev);
+
+ /* print bus type/speed/width info */
+ dev_info(&pdev->dev, "(PCI Express:%s Width: %s Payload: %s)\n",
+ (hw->bus.speed == fm10k_bus_speed_8000 ? "8.0GT/s" :
+ hw->bus.speed == fm10k_bus_speed_5000 ? "5.0GT/s" :
+ hw->bus.speed == fm10k_bus_speed_2500 ? "2.5GT/s" :
+ "Unknown"),
+ (hw->bus.width == fm10k_bus_width_pcie_x8 ? "x8" :
+ hw->bus.width == fm10k_bus_width_pcie_x4 ? "x4" :
+ hw->bus.width == fm10k_bus_width_pcie_x1 ? "x1" :
+ "Unknown"),
+ (hw->bus.payload == fm10k_bus_payload_128 ? "128B" :
+ hw->bus.payload == fm10k_bus_payload_256 ? "256B" :
+ hw->bus.payload == fm10k_bus_payload_512 ? "512B" :
+ "Unknown"));
+
+ /* print warning for non-optimal configurations */
+ fm10k_slot_warn(interface);
+
return 0;
+err_register:
+err_sw_init:
+ iounmap(interface->uc_addr);
+err_ioremap:
+ free_netdev(netdev);
+err_alloc_netdev:
+ pci_release_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM));
err_pci_reg:
err_dma:
pci_disable_device(pdev);
**/
static void fm10k_remove(struct pci_dev *pdev)
{
+ struct fm10k_intfc *interface = pci_get_drvdata(pdev);
+ struct net_device *netdev = interface->netdev;
+
+ /* free netdev, this may bounce the interrupts due to setup_tc */
+ if (netdev->reg_state == NETREG_REGISTERED)
+ unregister_netdev(netdev);
+
+ iounmap(interface->uc_addr);
+
+ free_netdev(netdev);
+
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));
projects / linux-beck.git / commitdiff